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"Necesito" is a form of "necesitar", a transitive verb which is often translated as "to need". "Tengo que" is a phrase which is often translated as "I have to". Learn more about the difference between "tengo que" and "necesito" below.
tengo que(
tehng
-
goh
keh
)A phrase is a group of words commonly used together (e.g., once upon a time).
c. I must
Tengo que ir a verla. Le debo una visita desde hace una semana.I must go see her. I've owed her a visit for two weeks.
necesitar(
neh
-
seh
-
see
-
tahr
)A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
1. (to require)
An auxiliary verb, or helper verb, is a conjugated verb that comes before a main verb and determines the main verb's tense, mood, or aspect (e.g., I have gone.).
a. to need
Necesitan salir ya si quieren alcanzar su vuelo.You need to leave now if you want to make your flight.
